RC-Monster Forums

RC-Monster Forums (https://www.rc-monster.com/forum/index.php)
-   Revo (https://www.rc-monster.com/forum/forumdisplay.php?f=24)
-   -   2600 Kv rated motors? which one? (https://www.rc-monster.com/forum/showthread.php?t=9411)

Revracer 01.10.2008 10:44 PM

and your saying 35-40mph with wheelies easily? and then if i did want to step up i could go to something like a 9 or 10l and be safe on 4s?

lincpimp 01.10.2008 10:50 PM

Quote:

Originally Posted by Revracer (Post 140264)
and your saying 35-40mph with wheelies easily? and then if i did want to step up i could go to something like a 9 or 10l and be safe on 4s?

If you keep the 2 speed and mech brakes I do not see a problem running a 10l on 4s. The 7xl will provide more power than the 10l will on 4s. However the 7xl will require better batteries than the 10l will. It is a balancing act picking a motor, you need to take into consideration the battery and gearing.

What 3s battery do you plan on running?

Revracer 01.10.2008 10:54 PM

maxamps 5000 lipo. thats what i will run on 3s right now. and later on i will probly get twin 5000 2s to run in it if i go that high. i already have the 3s. and i will be running 2speed and mech brake. and a 9l is rated for 2700kv(around that) so it would probly run a little cooler, slower, and have more acceleration than the 8l right? or should i just get the 8l? since you say the 7xl wont be able to turn fast enough on a 3s... that disapoints me. squee said he runs a 3s and 7xl and it does good.

lincpimp 01.10.2008 11:01 PM

Given your battery choice, you may want to stay with the 8l and the 16/40 gearing. Nothing against maxamps, but if you are going to buy a pair of 2s lipos go with the trakpower batteries. I have a pair of 5k maxamps 2s packs and was not happy with their performance oin my 7xl powered revo. Did not have the punch that a battery of that size should. Not sure what squee is using in the way of batteries, but it is most likely a better pack.

The 9l will run cooler, but slower and the acceleration will not be much differnent if any. I have run a 9l in a heavily modified tune buggy stampede. Not a bad motor, but the 8l worked very well in the revo. It runs right at 35k rpm on 3s and will allow for lower gearing than the 9l will. That should help the mm and the batteries.

squeeforever 01.10.2008 11:02 PM

I think you would be fine with the 7X, personally. If you get the Feigao from United Hobbies, you could get both. There rather cheap there.

Revracer 01.10.2008 11:03 PM

well i was actually looking at possibly the reedy packs once they come out. when they get out thats probly when i will get the money for a 4s. okay so 8l, mamba max, and tekno kit. keep the mech brakes and 2 speed and i should have a fast truck? faster than a 3.3? sorry for all the questions im just kinda worried abotu getting something that wont do what i would like it too.

squeeforever 01.11.2008 12:15 AM

I wouldn't use the Tekno kit. The RC-M mount with the Tekno tray is the way to go...

Revracer 01.11.2008 12:18 AM

why? whats wrong with the tekno kit?

Revracer 01.11.2008 12:26 AM

i like the idea of it. keep your clutch, mechanical brakes, everything needed is included. seems liek a decent deal to me.

squeeforever 01.11.2008 12:36 AM

Yea, its a decent deal, but the clutch is the reason I wouldn't get it...

Revracer 01.11.2008 12:39 AM

what is wrong with the clutch? you set it loose so it instantly grabs when you get on the throttle i would think. or set it tight to give even more bite. i think its a good thing personally. why would you say its bad?

lincpimp 01.11.2008 12:39 AM

Quote:

Originally Posted by Revracer (Post 140292)
i like the idea of it. keep your clutch, mechanical brakes, everything needed is included. seems liek a decent deal to me.

I have both a direct frive revo and a tekno revo (and a sliperential revo) and i would say that the tekno conversion is more forgiving or a smaller motor and less powerful batteries. I just feel that the 7xl on 3s spinning 26k rpm will require a lot of gearing and place more load on the esc and battery. This will be amplified with the direct drive. The clutch smooths out the startup, so the voltage spikes are less extreme. Just my opinion from my findins though. I can safely say that you will be happy with the quality and performance of the tekno kit. And the use of an 8l with you current mm and 3s battery will be the cheapest way to get it rolling.

Revracer 01.11.2008 12:46 AM

and it will be both a good basher and racer? does it have the torque and speed to outrun a 3.3 on the track? given the same driver and all?

lincpimp 01.11.2008 01:12 AM

Having run a 3.3 revo, I am not really impressed. The lack of low end torque and poor throttle respose really seem like a problem for racing. I do not race, however I can control a rc vehicle well, and apreciate the various suspension adjustments, etc. I would say that a brushless system (of any type) would be easier to drive due to its relatively flat torque curve and linear horsepower. I have not seen a slow brushless vehicle yet, and do not see a nitro vehicle being able to top out, speed wise, before a brushless would. The acceleration is so much better with a brushless setup. There is really no comparision. We ran the 8l revo in front of a few nitro revo owners and they were all very impressed. They tried to drive it and said that it was too powerful (for their skill level, HAHA!).

squeeforever 01.11.2008 01:52 AM

Personally, I think the clutch is something that should stay on a nitro engine. I think its a good idea, especially for some applications, but not a Revo. Another thing to consider is the fact that from what people have posted, it seems like it will kill your runtime. Its just one more thing thats not necessary. I use the RC-M mount and with the center diff, it takes off great, no cogging, and wheelies aren't an issue (wheelies are useless in a race anyway) and everything can be kept stone cold. The MM was getting a little hot, but only cause it was overgeared slightly and I was using the internal BEC.

lincpimp 01.11.2008 02:01 AM

Quote:

Originally Posted by squeeforever (Post 140312)
Personally, I think the clutch is something that should stay on a nitro engine. I think its a good idea, especially for some applications, but not a Revo. Another thing to consider is the fact that from what people have posted, it seems like it will kill your runtime. Its just one more thing thats not necessary. I use the RC-M mount and with the center diff, it takes off great, no cogging, and wheelies aren't an issue (wheelies are useless in a race anyway) and everything can be kept stone cold. The MM was getting a little hot, but only cause it was overgeared slightly and I was using the internal BEC.

People have posted issues with runtime due to the clutch? Strange, my setup gets great runtimes, at least 35 mins and usually closer to 45mins, mixed bashing. It is an aveox 200kv motor, quark 80 airmaster and 5s 5k lipos.

Revracer 01.11.2008 04:57 PM

okay well im deffinetly getting the 8l and the mamba max. tekno kit is gonna happen. im set on that. and my maxamps 5000 3s lipo should provide plenty power for the truck right? easily enough to make it lift tires up and good speeds?

lincpimp 01.11.2008 10:04 PM

Yep, the 5k 3s pack and the 8l should do what you want!

Revracer 01.11.2008 10:30 PM

very cool. thanks yall

squeeforever 01.11.2008 11:16 PM

Quote:

Originally Posted by lincpimp (Post 140314)
People have posted issues with runtime due to the clutch? Strange, my setup gets great runtimes, at least 35 mins and usually closer to 45mins, mixed bashing. It is an aveox 200kv motor, quark 80 airmaster and 5s 5k lipos.

Not exactly. Its just from what I've seen, people were only getting around 2/3 the runtime they should be getting. Like 20 minutes with a 8000mah pack.

lutach 01.11.2008 11:25 PM

That's where the Mega and a Quark 65 or MGM 80 would come in hand.

Revracer 01.11.2008 11:26 PM

no tekno got 20 minute races in on one battery. and that was a 3s 8k. bashing they claimed over 35 minutes.

lincpimp 01.11.2008 11:44 PM

Quote:

Originally Posted by Revracer (Post 140527)
no tekno got 20 minute races in on one battery. and that was a 3s 8k. bashing they claimed over 35 minutes.


This is why 3s is not that good, step up to 5s and you will see that a 5s 4000 packs will give you better runtimes that of the 8000 3s. Plus all of the equipmeent will run cooler. Say that you are try to get 1000watts out of a combo, on 3s you need 90amps. On 5s you only need 55 amps. That makes a huge difference on equipment temps. Same esc, same size and weight motor, just less kv, same overall motor and vehicle speed, same gearing. it will run better with higher voltage.

I can imagine that the tekno setup with the 8000 3s gets warmer than a similar powered 5s setup. Plus considering that a 8000 3s pack is made of 6 4000 cells, a 5s 4000 will weigh 1/6 of the 8000 pack. Less weight means better performance.

Revracer 01.11.2008 11:51 PM

yes but when you look at my price range.... i cant even afford to get a 4s system... i basically HAVE to use 3s for probly 6 months or so...

lincpimp 01.12.2008 12:07 AM

Quote:

Originally Posted by Revracer (Post 140535)
yes but when you look at my price range.... i cant even afford to get a 4s system... i basically HAVE to use 3s for probly 6 months or so...


That is why the 8l is so great. You only spend 60-70 bucks inc shipping, and you can sell it when you are done, or put it in a different vehicle. Have fun!

Revracer 01.12.2008 12:12 AM

it will go in something else. probly my maxx and it will run on 3s in that probly amazingly. since my maxx is lighter. yeh i was looking i found it for 60 at one site. can probly get it less at my LHS with my discount. plus $25 for the heatsink clamp. so not too much for a great motor.

squeeforever 01.12.2008 01:04 AM

Your not listening to me...I might as well give up...First off, you can get the Feigaos from UNITED HOBBIES for HALF of the normal price...Second, you don't HAVE to run a 3S setup. You can easily sell your Maxamps packs, get a good bit of money, and go buy better, cheaper packs from TrueRC. Third, you will most likely lose runtime with the Tekno kit. Like the runtime there claiming with the Tekno kit. Thats ridiculous with a 8000mah pack. Besides, you should get better runtime in a race than bashing. Don't know about you, but I'm easier on the throttle and definitely more precise in a race then running up and down the street...Fourth, the clutch is really useless. I'm running the direct drive setup and the throttle control is amazing, unlike it will be with a clutch. Its just something else thats not necessary.

Revracer 01.12.2008 01:12 AM

no i heard you. but im going to be running a smaller motor. support my LHS because im great friends with the owner. so all my parts come through him. the clutch might be useless to you. but i like the nitro driving feel, just not the maintenance. so i want to have something a little like nitro. here its the clutch. im not selling my 3s because i use it in 2 other trucks already. and i am going to get a good set of packs to make a 4s later on down the road. and tekno was running a neu motor, mamba max esc, and a 18/36 gearing. i am running a lightened revo with close ratio, similar electronics, and a 16-18/40. i thank you again for your help with all this. but some things are personal preferance. and my preferance is a clutch. i like the way they feel and drive. and at my LHS, i can probly get a feigao motor for LESS than united hobbies.

lutach 01.12.2008 11:15 PM

I was able to fix my MBX5T somewhat to put my ACn22/30/2 in it. The steering still messed up from the crash due to lost signal. The smallest pinion I have is 14T and the spur is 49T. I will use my 2 3S 2200mAh packs in series and my Schulze 18.97. The motors Kv is 1770 and with 22.2v should give me a little over 39000rpm. I did a little test on carpet with my DPR and full throttle only showed bursts of 90A and with the 7XL using 4S 5000mAh lipos and my MGM 16016 in the truck I saw burst of over 150A and this was on asphalt. I will see if tomorrow I can run the truck and I'll post some data here and I might do a little video as well.

lutach 01.13.2008 04:32 PM

Here is a quick video of the MBX5T truggy w/ the Mega Acn22/30/2 (1770Kv), Schulze 18.97 and 2 3S 2200mAh lipos in series (22.2v). This truck was in a bad crash and some parts were bent. I was able to get them as straight as possible, but the motor mount still is a little bent and the pinion and spur doesn't align properly. Here is the video: http://www.youtube.com/v/EAtcnCTdjAI

<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/EAtcnCTdjAI"> </param> <embed src="http://www.youtube.com/v/EAtcnCTdjAI" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>

Almost forgto to mention that the DPR for some reason didn't record the run. My daughter gets a little excided.


All times are GMT -4. The time now is 10:53 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.